WO2019230525A1 - Récipient - Google Patents

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Publication number
WO2019230525A1
WO2019230525A1 PCT/JP2019/020295 JP2019020295W WO2019230525A1 WO 2019230525 A1 WO2019230525 A1 WO 2019230525A1 JP 2019020295 W JP2019020295 W JP 2019020295W WO 2019230525 A1 WO2019230525 A1 WO 2019230525A1
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WO
WIPO (PCT)
Prior art keywords
container
delamination
mouth
shoulder
inner bag
Prior art date
Application number
PCT/JP2019/020295
Other languages
English (en)
Japanese (ja)
Inventor
敬能 細谷
真輔 樽野
山内　由夫
Original Assignee
キョーラク株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2018101279A external-priority patent/JP7235947B2/ja
Priority claimed from JP2018185623A external-priority patent/JP7161101B2/ja
Priority claimed from JP2019094070A external-priority patent/JP7352063B2/ja
Application filed by キョーラク株式会社 filed Critical キョーラク株式会社
Priority to CN202310384812.XA priority Critical patent/CN116280581A/zh
Priority to CN201980027279.3A priority patent/CN112041234B/zh
Publication of WO2019230525A1 publication Critical patent/WO2019230525A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge

Definitions

  • the present invention relates to a container.
  • Patent Document 1 discloses a delamination container that has an outer shell and an inner bag and in which the inner bag shrinks as the contents are reduced.
  • the container body of the delamination container including a bottomed cylindrical body, a cylindrical shoulder connected to the body, and a cylindrical mouth connected to the shoulder.
  • the container body of the delamination container is manufactured by forming a parison into a cylindrical shape with a mold.
  • An outer shell and an inner bag provided inside the outer shell are formed on the container body of the delamination container.
  • the contents are stored in the inner bag, and when the user compresses the delamination container and causes the contents of the inner bag to flow out, air enters the outer shell and the inner bag, and the inner bag is the inner surface of the outer shell. Is peeled off.
  • Patent Document 3 discloses a check valve configured to open and close a through hole of a cylindrical main body portion with a lid portion.
  • the lid portion is connected to the main body portion via a hinge portion, and is configured such that the through-hole is opened and closed when the lid portion rotates in the hinge portion.
  • the present invention has been made in view of such circumstances, and provides a delamination container capable of suppressing the occurrence of cracks at the lower end of the projecting portion, particularly the central portion in the longitudinal direction.
  • the connection portion between the mouth portion and the shoulder portion may be deformed.
  • the mouth may buckle toward the shoulder.
  • the situation where external force is applied to the mouth includes, for example, the situation where an article is placed on the delamination container during transportation of the delamination container, the situation where the delamination container falls and the mouth collides with the floor surface, etc. is there.
  • This invention is made
  • the present invention has been made in view of such circumstances, and provides a delamination container that can suppress the inflow of outside air into the inner bag.
  • the container includes a storage portion and a protruding portion, and the bottom surface of the storage portion includes a central portion and a peripheral portion surrounding the central portion, and the central portion includes the peripheral portion.
  • the protruding portion is configured to protrude downward from the central portion, and the protruding portion is located above the region including the center in the longitudinal direction at the lower end.
  • a container is provided comprising a curved portion that curves toward the.
  • the inventor curved the region including the center in the longitudinal direction at the lower end of the projecting portion, so that the stress concentration in the center portion in the longitudinal direction is alleviated at the time of impact such as dropping.
  • the inventors have found that the occurrence of cracks is suppressed, and have completed the present invention.
  • the lower end of the protrusion is positioned above the ground contact surface of the peripheral portion.
  • a ratio of a distance from the top to the most concave concave portion of the curved portion with respect to a distance from the highest top of the central portion to the ground contact surface is 0.75 to 0.99.
  • the container has an outer shell and an inner bag, and is configured such that the inner bag contracts as the content decreases.
  • the outer layer constituting the outer shell and the inner layer constituting the inner bag are arranged at positions symmetrical with respect to a plane defined by the longitudinal direction and the vertical direction of the protruding portion, respectively.
  • the protruding portion includes a tapered portion in which a cross section perpendicular to the longitudinal direction is tapered from the bottom surface toward the lower end.
  • it is formed at a position on the lower end side of the tapered portion, and includes a thin portion that is thinner than the tapered portion.
  • an inner bottom surface that is a bottom surface inside the container has a curved shape that protrudes toward the inside of the container, and the inner bottom surface is a central region of the container.
  • the container includes a storage portion and a protruding portion
  • the bottom surface of the storage portion includes a central portion and a peripheral portion surrounding the central portion, and the central portion is in relation to the peripheral portion.
  • the projecting portion is configured to project downward from the central portion, and the inner bottom surface, which is the bottom surface inside the container, protrudes toward the inside of the container.
  • the inner bottom surface is a container having a curvature radius in a central region of the container that is smaller than a curvature radius in a peripheral region around the central region.
  • a delamination container including a container body having an outer shell and an inner bag, the container body having a body portion, a shoulder portion, and a mouth portion, and the body portion having a bottom. Formed in a cylindrical shape, and the body portion is connected to the shoulder portion, the shoulder portion has a flat surface portion and a reinforcing recess, and the flat surface portion is connected to the mouth portion, The reinforcing recess is recessed in a direction from the outer shell side toward the inner bag side, and the reinforcing recess is from the flat surface portion side to a position hidden in the mouth when the container body is viewed from above.
  • An extended delamination container is provided.
  • the reinforcing recess extends from the flat surface portion side to a position hidden in the mouth when the container body is viewed from above, and as a result, the reinforcing recess is formed between the mouth and the shoulder. Therefore, it is possible to prevent the mouth from buckling toward the shoulder.
  • the mouth portion has a root portion, and the root portion is formed so as to rise on the flat surface portion, and the reinforcing recess reaches the root portion from the flat surface portion side.
  • a delamination container is provided.
  • the delamination container is provided in which the shoulder portion protrudes so as to protrude in a direction from the inner space side of the container body toward the outer space side of the container body.
  • the shoulder is formed with first and second reinforcing recesses corresponding to the reinforcing recesses, and the first and second reinforcing recesses are 180 degrees with respect to the central axis of the shoulder.
  • a delamination container is provided that is arranged to be made.
  • the reinforcing recess has a bottom wall portion and first and second side wall portions, and the first and second side wall portions are provided at one side end and the other side end of the bottom wall portion, respectively.
  • a delamination container is provided in which the bottom wall portion and the first and second side wall portions reach the root portion.
  • a delamination container is provided in which an inclination angle of the bottom wall portion is constant from the flat surface portion side to the root portion.
  • the shoulder portion further includes a curved surface portion, the curved surface portion is formed in a cylindrical shape, and the curved surface portion is connected to the flat surface portion and the trunk portion.
  • a delamination container including a cap, a container main body, and a valve member, the container main body having an outer shell and an inner bag, and the inner bag is reduced as the contents are reduced.
  • the container body is configured to shrink, and the container body includes an opening for discharging the contents, an outside air introduction hole that communicates an intermediate space between the outer shell and the inner bag, and an outer space, and the cap
  • the check valve is mounted on the mouth and includes a check valve.
  • the check valve includes a cylindrical main body having a through hole, and a lid configured to open and close the through hole.
  • the through hole is opened by moving, and the valve member includes a cylinder and a moving body.
  • the cylindrical body has a hollow portion provided so as to communicate the intermediate space and the external space, the movable body is movably accommodated in the hollow portion, and the cylindrical body includes the movable body.
  • a delamination container having a stopper portion that locks the moving body and blocks air flow through the cavity when moving toward the external space.
  • the delamination container is an angle between the inner surface of the main body and the inclined surface of 25.1 degrees or more.
  • the moving body is a delamination container having a spherical shape.
  • the moving body is a delamination container having a weight of 0.0250 g or less.
  • the moving body is a delamination container having a weight of 0.0150 g or less.
  • the moving body is a delamination container having a diameter of 2.356 mm to 2.406 mm.
  • FIG. 5A is a cross-sectional view taken along the line AA in FIG. 4
  • FIG. 5B is a cross-sectional view taken along the line BB in FIG. 4
  • FIG. 5C is an enlarged view of a main part of the cross-sectional view in FIG. It is a partial expanded sectional view of field E of Drawing 5A.
  • FIG. 7A is an explanatory view showing the shape of the lower end of a conventional protruding portion
  • FIG. 7B is an explanatory view exaggeratingly showing the shape of the lower end of the protruding portion 40 of the delamination container 1 of the present invention
  • FIG. 8A is an explanatory diagram illustrating the shape of the protrusion according to the modification of the present invention
  • FIG. 7B is an explanatory diagram illustrating the shape of the protrusion according to another modification of the present invention.
  • It is a perspective view of a field including bottom 30 of delamination container 1 concerning a 2nd embodiment of the 1st viewpoint of the present invention.
  • FIG. 10 is a bottom view of FIG. 9. It is AA sectional drawing in FIG.
  • FIG. 12A is a cross-sectional view taken along the line BB in FIG. 10, and FIG. 12B is an enlarged view of a region B in FIG. 12A.
  • 13A to 13C are a front view, a front perspective view, and a top view of the delamination container 1 according to the embodiment of the second aspect, respectively.
  • 15A to 15B are a rear view and a rear perspective view of the delamination container 1 of FIG. 13A, respectively.
  • 17A is a cross-sectional view taken along line AA shown in FIG. 13C, and FIG.
  • FIG. 17B is an enlarged view of the mouth portion 9 shown in FIG. 17A and its surroundings, showing a state in which the stopper cap Cp is attached to the mouth portion 9. Yes.
  • FIG. 13B is a sectional view taken along line BB shown in FIG. 13C.
  • 19A is a cross-sectional view taken along the line CC shown in FIG. 17A
  • FIG. 19B is an enlarged view of the square region B shown in FIG. 19A.
  • 20A is an AA end view shown in FIG. 17A
  • FIG. 20B is a BB end view shown in FIG. 17A.
  • It is a front view of the delamination container 1 which concerns on one Embodiment of the 3rd viewpoint of this invention.
  • FIG. 24A is a perspective view
  • FIG. 24B is a cross-sectional perspective view of the same cross section as FIG. 23.
  • FIG. 25A shows a closed state
  • FIG. 25B shows an open state.
  • FIG. 26A is a perspective view when the valve member 4 of FIG. 22 is viewed from above
  • FIG. 26B is a perspective view of the valve member 4 when viewed from below.
  • 27A is a plan view of the valve member 4 of FIG. 22, and FIG.
  • FIG. 27B is a bottom view of the valve member 4.
  • 28A is a cross-sectional view taken along the line AA in FIG. 27A
  • FIG. 28B is a cross-sectional view taken along the line BB in FIG. 27A
  • 29A to 29C are end views taken along lines CC, DD, and EE in FIGS. 28A and 28B, respectively.
  • 30A is a cross-sectional view showing a state in which the valve member 4 is mounted on the outer shell 12
  • FIG. 30B is a cross-sectional view showing a state in which the movable body 6 abuts against the stopper portion 52s and closes the cavity portion 50. is there. It is a perspective view which shows the structure of the valve member of the comparative example 1.
  • a delamination container 1 according to a first embodiment of the first aspect of the present invention includes a substantially bottomed cylindrical container body 3 and a valve member 4 as shown in FIG.
  • the container body 3 includes a storage portion 17 that stores the contents, and a mouth portion 9 that discharges the contents from the storage portion 17.
  • the container body 3 includes an outer layer 11 and an inner layer 13 in the housing portion 17 and the mouth portion 9, an outer shell 12 is constituted by the outer layer 11, and an inner bag 14 is constituted by the inner layer 13.
  • an outer shell 12 is constituted by the outer layer 11
  • an inner bag 14 is constituted by the inner layer 13.
  • the inner layer 13 is peeled from the outer layer 11, whereby the inner bag 14 is separated from the outer shell 12 and contracts.
  • the mouth portion 9 is provided with an engaging portion 9e that can be engaged with a cap (not shown) with a check valve.
  • the cap may be attached by a stopper type or may be attached by a screw type.
  • the valve member 4 is inserted into an outside air introduction hole 15 formed in the accommodating portion 17 as shown in FIG.
  • the valve member 4 is for adjusting the flow of air between the intermediate space between the outer shell 12 and the inner bag 14 and the outer space.
  • the valve member 4 of the present embodiment closes the outside air introduction hole 15 so that the inner bag 14 can be compressed, and when the compression force to the outer shell 12 is released, the valve member 4 enters the intermediate space. It is configured to introduce outside air.
  • the accommodating portion 17 is covered with a shrink film after the valve member 4 is attached. At this time, the valve member 4 is mounted in the valve member mounting recess 3r provided in the housing portion 17 so that the valve member 4 does not interfere with the shrink film.
  • the bottom part 30 of the accommodating part 17 is provided with the center part 31 and the peripheral part 32, as shown in FIG.3 and FIG.4.
  • the peripheral portion 32 is provided around the central portion 31.
  • the central portion 31 is recessed toward the inside of the container relative to the peripheral portion 32 and is a raised bottom.
  • the central portion 31 is formed with a protruding portion 40 that protrudes downward from the bottom surface.
  • the protruding portion 40 includes a tapered portion 41 and a thin portion 42 as shown in FIG. 6 which is an enlarged sectional view of the region E in FIG. 5A.
  • the tapered portion 41 has a cross-sectional shape perpendicular to the longitudinal direction, and tapers from the bottom surface toward the tip.
  • the thin portion 42 is formed at a position on the lower end side of the tapered portion 41 and is thinner than the tapered portion 41.
  • the cross-sectional shape of the thin portion 42 is a rectangle having a long side in a direction perpendicular to the bottom surface (see FIG. 6).
  • the protrusion part 40 is formed so that the bottom part 30 whole may be crossed along the longitudinal direction (left-right direction of FIG. 5B), as shown in FIG.3 and FIG.5B. Therefore, a part of the peripheral portion 32 is a groove portion 33 (see FIG. 3), and the central portion 31 and the groove portion 33 are connected at this portion.
  • the protrusion part 40 protrudes from the center part 31 and the groove part 33 which became the raising bottom rather than the peripheral part 32, it does not protrude from the ground-contact surface H prescribed
  • the part 42 is located above the ground plane H.
  • the protruding portion 40 of the present embodiment is formed in a region including the longitudinal center portion of the lower end (the lower end of the thin portion 42).
  • the curved portion 43 is slightly curved upward (inner side of the container). In other words, as for the lower end of the protrusion part 40, the center part of the longitudinal direction is dented upwards. This point will be described later.
  • Such a delamination container 1 of this embodiment is molded by blow molding using a laminated parison. At that time, the laminated parison is pinched off at the lower end of the protrusion 40 (the lower end of the thin portion 42). That is, the portion where the laminated parison is cut by the mold defines the shape of the lower end of the protrusion 40.
  • the outer shell 12 and the inner bag 14 are sealed at the protruding portion 40.
  • the taper portion 41 is tapered and the thin portion 42 is thin, the ratio of the inner layer 13 to the outer layer 11 in the protruding portion 40 is such that other portions of the bottom portion 30, side surfaces of the container body 3, etc. It is less than the ratio of the inner layer 13 in the place of. Therefore, at the lower end portion of the protrusion 40, as shown in FIG. 6, the outer layers 11 are welded at least in a region, that is, the left and right outer layers 11 across the seal portion are welded without the inner layer 13 interposed therebetween. It is like that. With such a configuration, the welding force of the pinch-off portion is improved and the impact resistance can be improved as compared with the configuration in which the entire outer layer 11 is welded via the inner layer 13 in the protruding portion 40.
  • the protrusion part 40 of this embodiment is not a structure which bends the lower end part. Therefore, as shown in FIG. 6, in the protrusion 40, the outer layer 11 constituting the outer shell 12 and the inner layer 13 constituting the inner bag 14 are in a plane defined by the line BB in FIG. They are arranged at symmetrical positions with respect to a plane defined by the longitudinal direction and the vertical direction.
  • the present inventor conducted a drop test of the delamination container in a state where the contents were filled, and observed the deformation of the bottom at the moment when the impact was applied by observing with a camera.
  • the central part of the bottom part instantaneously reversed and protruded downward.
  • the stress of the tension direction concentrated on the longitudinal direction center part of the lower end of a protrusion part, and it discovered that the crack of the direction (short side direction) perpendicular
  • the present inventor provides a curved portion 43 in which the central portion in the longitudinal direction at the lower end of the protruding portion 40 is curved upward (inner side of the container) as shown in FIGS. 5B and 7B.
  • the configuration was found and the present invention was completed.
  • the structure which provides the curved part 43 in such a protrusion 40 should just curve the shape of the pinch-off part of a metal mold
  • the bending part 43 should just be slightly curved, and it is preferable that the area reduced by bending becomes small. This is because if the projecting portion 40 is greatly curved and greatly recessed, the seal area of the outer shell 12 and the inner bag 14 in the projecting portion 40 is reduced, and impact resistance, particularly impact resistance against cracks in the longitudinal direction. (It should be noted that FIG. 7B is an exaggerated drawing of the curvature and does not represent an exact shape).
  • the concave portion 43 is the most concave from the top portion 31t to the distance L2 from the top portion 31t that is the most raised bottom of the central portion 31 to the ground plane H.
  • the ratio X1 is more preferably 0.85 to 0.95, and further preferably 0.88 to 0.93.
  • the value of the ratio X1 is, for example, 0.75, 0.76, 0.77, 0.78, 0.79, 0.80, 0.81, 0.82, 0.83, 0.
  • the curved portion 43 of the projecting portion 40 of the present embodiment has an arc shape in a side view shown in FIG. 5B, and the curvature radius Ra of the curved portion 43 shown in FIG. 5C is equal to that of the bottom portion 30 shown in FIG. 5C. It is larger than the radius Rb.
  • the ratio X2 is more preferably 4.0 or more, more preferably 5.0 to 10, more preferably 6.0 to 8.0, and 6.5 to 7.5. More preferably.
  • the value of the ratio X2 is, for example, 5.0, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5. 9, 6.0, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7.0, 7.1 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, 8.08.1, 8.2, 8.3, 8.4 8.5, 8.6, 8.7, 8.8, 8.9, 9.0, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9. 7, 9.8, 9.9, 10.0, and may be within a range between any two of the numerical values exemplified here.
  • the bending portion 43 slightly curved, it is possible to secure a sealing area in the protruding portion 40 and suppress cracking in the longitudinal direction while suppressing short-direction cracking in the central portion.
  • the peripheral portion 32 causes the longitudinal center of the lower end of the protrusion 40 to protrude downward. It does not protrude below the prescribed ground plane H. As a result, it is possible to prevent the container from falling.
  • a shrink film is attached to the accommodating portion 17 in a state where the accommodating portion 17 is filled with hot contents (hot pack) and the container 1 is heated. Since the container 1 is softened by heating, in the case of a conventional container, when the shrink film is mounted in a heated state, the container portion 17 is compressed during mounting so that the protruding portion 40 is directed downward. 1 is deformed (that is, the container 1 is in a protruding state), and as a result, the protruding portion 40 protrudes from the ground contact surface H, and the container is likely to fall down.
  • the protruding portion 40 since the curved portion 43 is provided at the lower end of the protruding portion 40, the protruding portion 40 is unlikely to be deformed downward, and the container 1 may be in a protruding state. It is suppressed.
  • the present invention can also be implemented in the following modes.
  • the protrusion part 40 was comprised from the taper part 41 and the thin part 42, the thin part 42 is not essential.
  • the same effect as that of the above embodiment can be obtained by curving the longitudinal center part of the lower end of the taper part 41 upward.
  • the cross-sectional shape of the protrusion 40 may not be a tapered shape, and may have a rectangular cross section, for example.
  • the lower end of the protrusion part 40 became a shape which curves over a substantially longitudinal direction. However, as shown in FIG.
  • the lower end of the projecting portion 40 may have a shape in which only the central portion in the longitudinal direction is curved upward. Further, as shown in FIG. 8B, the curved portion at the lower end of the protrusion 40 can be slightly displaced from the center while including the center in the longitudinal direction of the protrusion. Even if it is these shapes, it is possible to suppress the crack of the transversal direction in a center part.
  • a delamination container 1 according to a second embodiment of the first aspect of the present invention will be described with reference to FIGS.
  • the container 1 of the present embodiment is similar to the first embodiment of the first aspect, and the difference in the configuration of the inner bottom surface 1a inside the container 1 is the main difference.
  • the difference will be mainly described.
  • the inner bottom surface 1a has a curved shape that is convex toward the inside of the container, and the curvature radius C1 in the central region P1 of the container 1 is the curvature radius C2 in the surrounding region P2 around it. Smaller than. According to such a configuration, deformation such that the protruding portion 40 is directed downward is less likely to occur. For this reason, when a shrink film is mounted immediately after the hot pack, the deformation such that the protruding portion 40 is directed downward is particularly suppressed.
  • C1 / C2 is, for example, 0.1 to 0.9, preferably 0.2 to 0.6, and specifically, for example, 0.1, 0.2, 0.3, 0. 4, 0.5, 0.6, 0.7, 0.8, and 0.9, and may be in a range between any two of the numerical values exemplified here.
  • Y1 / Y2 is, for example, 0.1 to 0.9, preferably 0.2 to 0.6, specifically 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0, for example. 0.7, 0.8, and 0.9, and may be within a range between any two of the numerical values exemplified here.
  • the shape of the inner bottom surface 1a described in the second embodiment of the first aspect can also be applied to a container in which the protruding portion 40 is not provided. Even in this case, since the radius of curvature C1 is smaller than the radius of curvature C2, deformation such that the protruding portion 40 is directed downward is suppressed.
  • the delamination container 1 is described as an example, but the present invention can be applied to containers other than the delamination container.
  • the container has a protrusion
  • the region including the center in the longitudinal direction at the lower end of the protrusion can be curved upward to relieve stress at the center in the longitudinal direction and suppress the occurrence of cracks. It becomes.
  • the laminated peeling container 1 includes a container body 3 and a valve member 4.
  • the container main body 3 includes a trunk portion 7 that stores the contents, a shoulder portion 8 that stores the contents, and a mouth portion 9 that allows the contents in the container main body 3 to flow out of the container main body 3.
  • a stopper cap Cp is attached to the mouth portion 9. That is, the mouth portion 9 is a mouth portion having a stoppering configuration, and the stopper cap Cp is attached to the mouth portion 9 by being plugged into the mouth portion 9.
  • the stopper cap Cp is schematically shown by a broken line.
  • Container body 3 1-1-1.
  • Container body 3 1-1-1.
  • Outer shell 12 and inner bag 14 The container body 3 includes an outer shell 12 and an inner bag 14 at the trunk portion 7, the shoulder portion 8, and the mouth portion 9. As the content decreases, the inner bag 14 peels from the inner surface of the outer shell 12, and the inner bag 14 contracts away from the inner surface of the outer shell 12.
  • the outer shell 12 is formed to be thicker than the inner bag 14 so that the restoring property is high.
  • the outer shell 12 is made of, for example, low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer, and a mixture thereof.
  • the outer shell 12 may have a multilayer structure.
  • the inner bag 14 is preferably composed of a plurality of layers.
  • an EVOH layer made of an ethylene-vinyl alcohol copolymer (EVOH) resin is used for the layer in contact with the outer shell 12, and the layer in contact with the contents is, for example, low density polyethylene, linear low density polyethylene, high
  • An inner surface layer made of polyolefin such as density polyethylene, polypropylene, ethylene-propylene copolymer and a mixture thereof can be used.
  • An adhesive layer is preferably used between the EVOH layer and the inner surface layer.
  • drum 7 is a bottomed cylindrical member.
  • the trunk portion 7 includes an upper portion 7A, a reduced diameter portion 7B, and a bottom portion 7C. Since the outer diameter of the reduced diameter portion 7B is smaller than the outer diameter of the upper portion 7A, the user can easily grip the reduced diameter portion 7B.
  • the upper portion 7A is connected to the shoulder portion 8.
  • shoulder 8 As shown in FIGS. 14 and 16, the upper end portion of the shoulder portion 8 is connected to the mouth portion 9, and the lower end portion of the shoulder portion 8 is connected to the trunk portion 7. As shown in FIG. 18, the shoulder 8 protrudes so as to protrude in the direction from the inner space S2 side of the container body 3 toward the outer space S1 side of the container body 3, and the container body 3 secures an internal volume. The shape is easy to do. Specifically, as shown in FIG.
  • the position of the inner side surface of the base portion 9A which will be described later, is defined as position P1
  • the position of the inner side surface of the portion where the curved surface portion 8B and the upper portion 7A are connected is defined as position P2
  • the position P1 And a straight line passing through the position P2 is defined as a virtual line G.
  • the shoulder 8 protrudes so as to protrude in the direction Dr from the virtual line G side toward the external space S1 side. That is, the entire shoulder portion 8 protrudes so as to be convex in the direction Dr.
  • the shoulder portion 8 has a flat surface portion 8A and a curved surface portion 8B.
  • the flat surface portion 8A is provided above the curved surface portion 8B.
  • the flat surface portion 8A is an annular member, and the flat surface portion 8A is formed in a flat plate shape.
  • the inner edge of the flat surface portion 8A is connected to the mouth portion 9, and the outer edge of the flat surface portion 8A is connected to the curved surface portion 8B.
  • the flat surface portion 8A is inclined downward from the mouth portion 9 side to the curved surface portion 8B side.
  • the curved surface portion 8B is formed in a cylindrical shape.
  • the upper end portion of the curved surface portion 8B is connected to the flat surface portion 8A, and the lower end portion of the curved surface portion 8B is connected to the body portion 7.
  • the curved surface portion 8B is inclined downward from the flat surface portion 8A side to the body portion 7 side, and the inclination angle of the outer surface of the curved surface portion 8B is larger than the inclination angle of
  • the shoulder portion 8 is formed with reinforcing recesses Rf and Rr.
  • One of the reinforcing recess Rf and the reinforcing recess Rr corresponds to the first reinforcing recess, and the other corresponds to the second reinforcing recess.
  • the reinforcing recesses Rf and Rr reinforce the base portion 9A of the mouth portion 9. That is, since the reinforcing recesses Rf and Rr are formed in the shoulder portion 8, the root portion 9 ⁇ / b> A is reinforced by the reinforcing recesses Rf and Rr, and the mouth portion 9 is suppressed from buckling to the shoulder portion 8 side.
  • the reinforcing recess Rf is formed on the front side of the container body 3, and the reinforcing recess Rf is formed on the back side of the container body 3.
  • the reinforcing recesses Rf and Rr are arranged so as to form 180 degrees with respect to the central axis of the shoulder 8. That is, the reinforcing recess Rf, the point on the central axis of the shoulder 8 and the reinforcing recess Rr are arranged in a straight line.
  • the reinforcing recesses Rf and Rr are arranged so as to form 180 degrees when the center axis of the shoulder 8 is used as a reference, the reinforcing regions of the reinforcing recesses Rf and Rr are suppressed from being biased, and the mouth portion 9 is The buckling to the shoulder 8 side is more reliably suppressed.
  • the mouth portion 9 is connected to the upper portion of the trunk portion 7.
  • the mouth 9 is a cylindrical member.
  • the mouth portion 9 has a root portion 9A, a standing portion 9B, an enlarged diameter portion 9D, a wall portion 9E, a mounting convex portion 9C, a tapered wall portion 9F, and a mouth upper end portion 9G.
  • the root portion 9 ⁇ / b> A is provided at a portion where the mouth portion 9 is connected to the shoulder portion 8, that is, at the root portion of the mouth portion 9.
  • the root portion 9A is formed so as to rise on the flat surface portion 8A.
  • the height dimension of the root portion 9A is, for example, 0.5 mm to 2.0 mm. Further, the dimension of the difference between the inner and outer diameters of the root portion 9A is, for example, 0.5 mm to 2.0 mm.
  • the outer surface of the root portion 9A is inclined from the standing portion 9B to the flat surface portion 8A. That is, the outer surface of the root portion 9A is tapered.
  • the standing portion 9B extends in the vertical direction. That is, the standing portion 9B is a straight cylindrical portion. The diameter of the standing portion 9B is smaller than the diameter of the root portion 9A. As shown in FIG. 14, FIG. 17A and FIG.
  • the mouth portion 9 has a constricted shape 9H extending from the root portion 9A, the standing portion 9B and the enlarged diameter portion 9D.
  • the enlarged diameter portion 9 ⁇ / b> D extends in a direction substantially orthogonal to the central axis of the container body 3.
  • the inner part of the enlarged diameter part 9D is connected to the standing part 9B, and the outer part of the enlarged diameter part 9D is connected to the wall part 9E.
  • the wall 9E extends so as to rise upward.
  • the upper end portion of the wall portion 9E is connected to the mounting convex portion 9C.
  • the mounting convex portion 9C is a portion where the stopper cap Cp is mounted, and the outer diameter of the mounting convex portion 9C is the largest among the outer diameters of the mouth portion 9.
  • the tapered wall portion 9F is a wall portion formed so as to taper from the mounting convex portion 9C side to the mouth upper end portion 9G side.
  • the upper end portion 9G corresponds to the outlet of the contents in the container body 3, and the upper end portion 9G is located at the top of the mouth portion 9.
  • valve member 4 As shown in FIG. 17A, the valve member 4 is mounted in an outside air introduction hole 15 formed in the trunk portion 7, and the air between the outer space S1 and the intermediate space 21 between the outer shell 12 and the inner bag 14 is removed. Adjust access.
  • the outside air introduction hole 15 is a through hole provided only in the outer shell 12 and does not reach the inner bag 14.
  • the valve member 4 includes a cylindrical body 5 configured to communicate the intermediate space 21 and the external space S ⁇ b> 1, and a movable body 6 movably accommodated in the cylindrical body 5.
  • the cylinder 5 and the moving body 6 are formed by injection molding or the like.
  • the moving body 6 is preferably spherical.
  • reinforcing recess 2-1 Reinforcing recess Rf
  • the formation range of the reinforcing recess Rf extends to the root portion 9A of the mouth portion 9, the flat surface portion 8A, and the curved surface portion 8B. That is, the reinforcing recess Rf is not only formed in the curved surface portion 8B and the flat surface portion 8A, but the reinforcing recess Rf reaches the root portion 9A from the curved surface portion 8B side. In other words, the reinforcing recess Rf is formed so as to extend from the curved surface portion 8B to the root portion 9A.
  • the reinforcing recess Rf has a first recess R1 and a second recess R2.
  • the first recessed portion R1 is connected to the second recessed portion R2, and the first recessed portion R1 extends linearly from the portion connected to the second recessed portion R2, and reaches the root portion 9A.
  • the second recess R2 is substantially circular, and the valve member 4 is disposed in the second recess R2.
  • the shoulder portion 8 includes a bottom wall portion 8a1, a pair of side wall portions 8a2, a circular wall portion 8a3, and an arcuate wall portion 8a4.
  • One side wall 8a2 of the pair of side walls 8a2 corresponds to the first side wall, and the other side wall 8a2 corresponds to the second side wall.
  • the first recess R1 is formed by a bottom wall portion 8a1 and a pair of side wall portions 8a2, and the second recess R2 is formed by a circular wall portion 8a3 and an arcuate wall portion 8a4.
  • the bottom wall 8a1 is provided so as to straddle the root 9A, the flat surface 8A, and the curved surface 8B.
  • the pair of side wall portions 8a2 are also provided so as to straddle the root portion 9A, the flat surface portion 8A, and the curved surface portion 8B.
  • one side wall 8a2 is connected to one side end of the bottom wall 8a1, and the other side wall 8a2 is connected to the other side of the bottom wall 8a1.
  • the angle formed between the bottom wall 8a1 and each side wall 8a2 is greater than 90 degrees.
  • the outer surface of the bottom wall portion 8a1 and the outer surface of the circular wall portion 8a3 are inclined surfaces, and the inclination angle of the outer surface of the circular wall portion 8a3 is the bottom wall portion 8a1. It is larger than the inclination angle of the outer surface.
  • the bottom wall portion 8a1 has an upper end portion a1, an intermediate portion a2, and a lower end portion a3.
  • the inclination angle of the outer surface of the upper end part a1, the inclination angle of the outer surface of the intermediate part a2, and the inclination angle of the outer surface of the lower end part a3 are the same. That is, the inclination angle of the outer surface of the bottom wall portion 8a1 is constant.
  • the inclination angle of the bottom wall portion 8a1 is not reduced from the intermediate portion a2 to the upper end portion a1, and the inclination angle of the bottom wall portion 8a1 is constant from the flat surface portion 8A side to the root portion 9A.
  • the bottom wall portion 8a1 extends from the flat surface portion 8A side to the root portion 9A while maintaining the inclination angle. If the inclination angle of the upper end portion a1 is smaller than the inclination angle of the intermediate portion a2, the bottom wall portion 8a1 is positioned on the side of the mouth portion 9, and the bottom wall portion 8a1 supports the mouth portion 9. It becomes difficult to do. However, in the embodiment, the bottom wall portion 8a1 reaches the root portion 9A while maintaining the inclination angle from the intermediate portion a2 to the upper end portion a1, so that the bottom wall portion 8a1 is closer to the position immediately below the mouth portion 9. Therefore, the bottom wall 8a1 can support the mouth 9 more reliably.
  • An outside air introduction hole 15 is formed in the circular wall portion 8a3, and the valve member 4 is attached to the circular wall portion 8a3.
  • An arc-shaped wall 8a4 is connected to the periphery of the circular wall 8a3.
  • the bottom wall 8a1 has a constant width from the lower end a3 to the upper end a1.
  • the width is a width in a direction parallel to the direction from one side wall 8a2 to the other side wall 8a2. If the width of the upper end portion a1 becomes narrower toward the root portion 9A, the bottom wall portion 8a1 becomes difficult to support the mouth portion 9. However, in the embodiment, since the width of the bottom wall 8a1 is constant from the lower end a3 to the upper end a1, the bottom wall 8a1 can support the mouth 9 more reliably.
  • the formation range of the reinforcing recess Rr also extends to the root portion 9A, the flat surface portion 8A, and the curved surface portion 8B of the mouth portion 9 in the same manner as the reinforcing recess Rf. . That is, the reinforcing recess Rr is not only formed in the curved surface portion 8B and the flat surface portion 8A, but the reinforcing recess Rr reaches the root portion 9A from the curved surface portion 8B side. In other words, the reinforcing recess Rr is formed so as to extend from the curved surface portion 8B to the root portion 9A.
  • the shoulder 8 has a bottom wall 8b1 and a pair of side walls 8b2.
  • One side wall part 8b2 of the pair of side wall parts 8b2 corresponds to the first side wall part, and the other side wall part 8b2 corresponds to the second side wall part.
  • the reinforcing recess Rr is formed by a bottom wall portion 8b1 and a pair of side wall portions 8b2.
  • the bottom wall 8b1 is provided so as to straddle the root 9A, the flat surface 8A, and the curved surface 8B.
  • the pair of side wall portions 8b2 are also provided so as to straddle the root portion 9A, the flat surface portion 8A, and the curved surface portion 8B. As shown in FIG.
  • one side wall 8b2 is connected to one side end of the bottom wall 8b1, and the other side wall 8b2 is connected to the other side of the bottom wall 8b1.
  • the angle formed between the bottom wall 8b1 and each side wall 8b2 is greater than 90 degrees.
  • the outer surface of the bottom wall 8b1 is an inclined surface.
  • the bottom wall portion 8b1 has an upper end portion b1, an intermediate portion b2, and a lower end portion b3.
  • the inclination angle of the outer surface of the upper end portion b1 is the same as the inclination angle of the outer surface of the intermediate portion b2.
  • the inclination angle of the outer surface of the lower end part b3 is smaller than the inclination angle of the outer surface of the upper end part b1.
  • the inclination angle of the bottom wall portion 8b1 is not reduced from the intermediate portion b2 to the upper end portion b1, and the bottom wall portion 8b1 is constant from the flat surface portion 8A side to the root portion 9A.
  • the bottom wall portion 8b1 extends from the flat surface portion 8A side to the root portion 9A while maintaining the inclination angle.
  • the bottom wall portion 8b1 reaches the root portion 9A while maintaining an inclination angle from the intermediate portion b2 to the upper end portion b1, so that the bottom wall portion 8b1 is positioned closer to the position immediately below the mouth portion 9. This means that the bottom wall 8b1 can support the mouth 9 more reliably.
  • the bottom wall 8b1 has a constant width from the lower end b3 to the upper end b1.
  • the width here is a width in a direction parallel to a direction from one side wall 8b2 to the other side wall 8b2. For this reason, the bottom wall 8b1 can support the mouth 9 more reliably.
  • the molten laminated parison is extruded from an extruder, the molten laminated parison is set in a blow mold split mold, and the split mold is closed.
  • a blow nozzle is inserted into the opening of the container body 3 on the mouth 9 side, and air is blown into the cavity of the split mold while the mold is clamped.
  • the split mold is opened, and the blow molded product is taken out.
  • an outside air introduction hole 15 is formed in the outer shell 12 of the container body 3 of the delamination container 1.
  • the peeling tool When the outside air introduction hole 15 is formed, the peeling tool is brought into contact with the container body 3 with the container body 3 attached to the holding jig.
  • the reinforcing recess Rr engages with the holding jig. That is, the reinforcing recess Rr has not only a function of reinforcing the base portion 9A of the mouth 9 but also a function of positioning the container body 3 in the circumferential direction when the outside air introduction hole 15 is formed.
  • the amount of the laminated parison used when manufacturing one container body 3 is constant, if the diameter of the shoulder portion 8 and the diameter of the trunk portion 7 are set large, the corresponding amount in the split mold The laminated parison is extended. That is, compared with the thickness of the mouth 9, the thickness of the shoulder 8 and the thickness of the trunk 7 tend to be thin, but the diameter of the shoulder 8 and the diameter of the trunk 7 are set large. If it exists, compared with the thickness of the opening
  • reinforcing recesses Rf and Rr are formed on the shoulder 8 of the container body 3 of the delamination container 1 according to the embodiment.
  • the reinforcing recesses Rf and Rr function as ribs that support the opening 9.
  • the reinforcement recesses Rf and Rr are formed in the shoulder portion 8, so that the wall portions (the bottom wall portions 8a1 and 8b1 and the side wall portions 8a2 and 8b2) are formed in the reinforcement recesses Rf and Rr. become. Since the wall portion is formed so as to rise, it is more resistant to external force in the vertical direction (direction parallel to the central axis of the container body 3) than the flat surface portion 8A and the curved surface portion 8B. That is, this wall portion functions as a rib that reinforces the mouth portion 9 (the root portion 9A) when an external force in the vertical direction acts on the mouth portion 9.
  • the wall portion functioning as a rib also reaches the root portion 9A.
  • the root portion 9A is supported by the wall portion from a position close to the position directly below the root portion 9A.
  • the container body 3 of the delamination container 1 according to the embodiment has an increased resistance to the action of the root portion 9A trying to sink into the shoulder portion 8 side. Therefore, even if the thickness of the shoulder portion 8 is further reduced compared to the thickness of the mouth portion 9 by increasing the volume of the container body 3, the container body 3 of the delamination container 1 according to the embodiment.
  • the mouth portion 9 (the base portion 9A) is restrained from buckling toward the shoulder portion 8 side.
  • the shoulder 8 of the container body 3 of the delamination container 1 protrudes so as to protrude in the direction from the inner space S2 side of the container body 3 toward the outer space S1 side of the container body 3. For this reason, the container main body 3 has a shape that meets the need for a large volume.
  • the shoulder 8 protrudes so as to protrude in the direction from the inner space S2 side of the container body 3 toward the outer space S1 side of the container body 3, the shoulder portion 8 is directly below the mouth portion 9 accordingly. It becomes difficult to support the mouth portion 9 from the position. As a result, when an external force is applied to the mouth portion 9, the mouth portion 9 (root portion 9A) is likely to buckle toward the shoulder portion 8 side.
  • Reinforcing recesses Rf and Rr functioning as ribs are formed on the shoulder 8 of the container body 3 of the delamination container 1 according to the embodiment as described above.
  • the wall portion functioning as a rib also reaches the root portion 9A.
  • the root portion 9A is supported by the wall portion from a position close to the position directly below the root portion 9A.
  • the resistance against the action of the root portion 9A attempting to sink into the shoulder portion 8 side is increased, and the mouth portion 9 (root portion 9A) is suppressed from buckling toward the shoulder portion 8 side.
  • the wall portions may extend in the vertical direction. Accordingly, the root portion 9A is supported by the wall portion from a position directly below the root portion 9A, and the mouth portion 9 (root portion 9A) is further suppressed from buckling toward the shoulder portion 8 side.
  • the root portion 9A since the reinforcing recesses Rf and Rr reach the root portion 9A, the root portion 9A has the shoulder portion 8 in the container body 3 even if the shoulder portion 8 is not thickened more than necessary. Resistance to the action of trying to sink into the side is secured.
  • the stopper cap Cp since the stopper cap Cp is plugged into the mouth portion 9 so that the stopper cap Cp is attached to the mouth portion 9, the stopper cap Cp is attached to the mouth portion 9 as shown in FIG. 17B.
  • a force Fc that buckles toward the shoulder portion 8 acts on the mouth portion 9.
  • the lower end portion Cp1 of the stopper cap Cp is disposed above the standing portion 9B of the mouth portion 9, and the mouth portion 9 has a lower end portion of the stopper cap Cp.
  • a relatively wide space Sp is provided between Cp 1 and the shoulder 8 of the container body 3.
  • the interval Sp is provided in the mouth portion 9 because when the stopper cap Cp is plugged into the mouth portion 9, the support jig T needs to be disposed in the enlarged diameter portion 9 ⁇ / b> D in order to support the mouth portion 9. Because there is. As described above, since the opening Sp is provided in the mouth portion 9, the lower portion of the mouth portion 9 has a constricted shape 9H. Therefore, if the reinforcing recesses Rf and Rr are not formed in the shoulder portion 8, When the main body 3 (lamination peeling container 1) falls etc., possibility that the mouth part 9 will buckle to the shoulder part 8 side will increase. The constricted shape 9H is exposed to the outside even when the stopper cap Cp is attached to the mouth portion 9.
  • the container main body 3 (laminated peeling container 1) falls or the like.
  • the possibility that the mouth portion 9 buckles to the shoulder portion 8 side is increased.
  • the reinforcing recesses Rf and Rr are formed on the shoulder 8 of the container body 3 of the delamination container 1 according to the embodiment as described above, the lower part of the mouth 9 has a constricted shape 9H.
  • the effect of suppressing the mouth portion 9 from buckling toward the shoulder portion 8 is exhibited regardless of whether the stopper cap Cp is attached to the mouth portion 9 or not.
  • reinforcement recessed part Rf, Rr demonstrated as what reached
  • the container body 3 having such a configuration has the same effects as the effects of the above-described embodiment.
  • the lamination peeling container 1 which concerns on embodiment was a form provided with the opening
  • worn it is not limited to the form.
  • a screw-type cap is adopted as the cap of the delamination container 1 in place of the stopper cap Cp, and a screw portion that engages with the screw-type cap is provided in the mouth portion 9 in place of the mounting convex portion 9C. It may be formed. Even the container body 3 having such a configuration has the same effects as those of the above-described embodiment.
  • the delamination container 1 As shown in FIG. 21, the delamination container 1 according to an embodiment of the third aspect of the present invention includes a cap 2, a container body 3, and a valve member 4.
  • the container body 3 includes a storage portion 17 that stores the contents, and a mouth portion 9 that discharges the contents from the storage portion 17.
  • the container body 3 includes an outer shell 12 and an inner bag 14 in the housing portion 17 and the mouth portion 9. As the content decreases, the inner bag 14 peels from the outer shell 12, so that the inner bag 14 moves away from the outer shell 12 and contracts.
  • the outer shell 12 is formed to be thicker than the inner bag 14 so that the restoring property is high.
  • the outer shell 12 is made of, for example, low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer, and a mixture thereof.
  • the outer shell 12 may have a multilayer structure.
  • the inner bag 14 is preferably composed of a plurality of layers.
  • an EVOH layer made of an ethylene-vinyl alcohol copolymer (EVOH) resin is used for the layer in contact with the outer shell 12, and the layer in contact with the contents is, for example, low density polyethylene, linear low density polyethylene, high
  • An inner surface layer made of polyolefin such as density polyethylene, polypropylene, ethylene-propylene copolymer and a mixture thereof can be used.
  • An adhesive layer is preferably used between the EVOH layer and the inner surface layer.
  • the cap 2 is attached to the mouth 9 of the container body 3.
  • the cap 2 is a screw type, but may be a stopper type.
  • the cap 2 includes a cap body 20 and a cap cover 22 formed of a synthetic resin.
  • the cap body 20 and the cap cover 22 are connected by a hinge 23 so that the cap cover 22 can be opened and closed.
  • the cap body 20 includes a main cap member 24, a check valve 26, and a pouring member 29. 22 to 23, the cap cover 22 is omitted.
  • the main cap member 24 is a member that forms the outer shape of the cap 2, and includes a cylindrical outer tube portion 24o, a top plate portion 24t, an annular projecting portion 24p, and a thread groove 24e.
  • the top plate portion 24t extends inward from the upper end of the outer cylinder portion 24o, and the annular projecting portion 24p extends downward from the inner edge of the top plate portion 24t.
  • the outer peripheral surface of the annular projecting portion 24p contacts the inner peripheral surface of the mouth portion 9.
  • the thread groove 24 e is formed on the inner peripheral surface of the outer cylindrical portion 24 o and engages with the engaging portion of the mouth portion 9.
  • the check valve 26 is attached to the annular protrusion 24p.
  • the check valve 26 includes a main body portion 26a, a lid portion 26b, and a hinge portion 26c.
  • the main body part 26a is cylindrical and has a through hole 26a1.
  • the lid portion 26b is configured to be able to open and close the through hole 26a1.
  • the lid portion 26b has an inclined surface 26b1. When the inclined surface 26b1 contacts the edge of the through hole 26a1, the through hole 26a1 is closed and the check valve 26 is closed.
  • the main body portion 26a and the lid portion 26b are connected by a hinge portion 26c.
  • the hinge portion 26c is configured to be elastically deformable, and the lid portion 26b rotates around the hinge portion 26c by elastic deformation of the hinge portion 26c. As a result, the through hole 26a1 is opened and the check valve 26 is opened.
  • the check valve 26 is preferably formed of an elastomer such as a rubber material, and the main body 26a, the lid 26b, and the hinge 26c are preferably integrally formed.
  • the angle ⁇ between the inner surface 26a2 of the main body portion 26a and the inclined surface 26b1 of the lid portion 26b is not particularly limited, but is preferably 25.1 degrees or more, and more preferably 25.5 degrees or more.
  • the angle ⁇ is, for example, 25.1 to 40 degrees, and specifically, for example, 25.1, 25.5, 26, 26.5, 27, 27.5, 28, 28.5, 29, 29. .5, 30, 35, and 40 degrees, and may be within a range between any two of the numerical values exemplified here. If the angle ⁇ is too small, the lid portion 26b may be fitted into the through hole 26a1 and the check valve 26 may not be open. However, by setting the angle ⁇ to 25.1 degrees or more, the check valve 26 is It becomes easy to become an open state.
  • the pouring member 29 includes a thin disk-shaped disk portion 29d, a pouring spout 29m, and an engaging portion 29e.
  • the spout 29m is formed at the center of the disk portion 29d, and the engaging portion 29e is engaged with the inner edge of the top plate portion 24t of the main cap member 24.
  • the valve member 4 is mounted in an outside air introduction hole 15 formed in the housing portion 17, and air between the outer space 12 and the outer space S between the outer shell 12 and the inner bag 14. Adjust access.
  • the outside air introduction hole 15 is a through hole provided only in the outer shell 12 and does not reach the inner bag 14.
  • the valve member 4 is movable into the hollow portion 50 having the hollow portion 50 provided to communicate the intermediate space 21 and the external space S.
  • a moving body 6 accommodated in the housing.
  • the cylinder 5 and the moving body 6 are formed by injection molding or the like.
  • the moving body 6 is preferably spherical.
  • the cylindrical body 5 is provided with a narrow-diameter shaft portion 51 disposed in the outside air introduction hole 15 and the outer space S side of the shaft portion 51, and the cylindrical body 5 is an intermediate space.
  • a disc-shaped locking portion 52 that prevents the tube 5 from entering the space 21, and an enlarged diameter portion 53 that is provided on the intermediate space 21 side of the shaft portion 51 and prevents the cylindrical body 5 from being pulled out from the outside of the container body 3.
  • An opening 52o connected to the cavity 50 is formed on the upper surface 52u of the locking portion 52 (that is, the outer surface on the outer space S side of the cylindrical body 5).
  • the adjacent region 52a is a circular flat region. Further, an annular projecting region 52p projecting from the adjacent region 52a toward the external space S is formed outside the adjacent region 52a of the upper surface 52u of the locking portion 52.
  • the cavity 50 is a hole that penetrates the cylindrical body 5 in the axial direction (a direction perpendicular to the outside air introduction hole 15), and accommodates the spherical moving body 6, so that the intermediate space 21 side and the external space S side in the axial direction are
  • the shape is narrow with respect to the central portion.
  • a portion corresponding to the inside of the locking portion 52 on the intermediate space 21 side of the cavity portion 50 has a truncated cone whose diameter decreases toward the outer space S side.
  • the stopper 52s is formed in the shape, and the movable body 6 is locked to block the air flow in the circumferential direction.
  • a pair of holding portions 53p that protrude inward in the radial direction and hold the moving body 6 accommodated in the cavity portion 50 are formed at two opposing positions (see FIG. 26B, see FIG. 28A).
  • the holding portion 53p has an inclined surface 53p1 that is inclined toward the outer space S side, and the moving body 6 is held in contact with the inclined surface 53p1 so that the moving body 6 is held. It has become.
  • the cross-sectional shape of the cavity 50 has a cross-section (CC cross-section) at a position corresponding to the locking portion 52 with a diameter toward the outer space S side. Becomes a gradually decreasing circle.
  • the cross section (DD cross section) at the position corresponding to the shaft portion 51 has a shape composed of a pair of parallel plane walls 51s and two arcuate walls 51c, which can be cut out at two opposing portions of the circle.
  • the cross section (EE cross section) at a position corresponding to the expanded diameter portion 53 has a shape formed by cutting out two opposing portions of a circle and including a pair of parallel plane walls 53s and two arcuate walls 53c. Become.
  • the planar wall 53s is formed by the inclined surface 53p1.
  • the holding portion 53p Since the holding portion 53p has the inclined surface 53p1 that is inclined toward the external space S side, when forming the cylindrical body 5 by injection molding, the core pin for forming the hollow portion 50 of the cylindrical body 5 is placed in the middle. When pulling out from the space 21 side, the holding portion 53p which is undercut is prevented from being turned over. Further, as shown in FIG. 28A, the holding portion 53p also has an inclined surface 53p2 that is inclined toward the intermediate space 21 also on the intermediate space 21 side.
  • the distal end portion of the cylindrical body 5 (the end portion of the expanded diameter portion 53) is an annular flat surface 53e, and is flat at two locations facing each other in the circumferential direction.
  • a notch 53n in which the surface 53e is notched is provided.
  • the movable body 6 is introduced into the hollow portion 50 of the cylindrical body 5 having the above shape from the intermediate space 21 side (the expanded diameter portion 53 side).
  • the holding part 53p is provided in the cylinder 5, since the holding part 53p has the inclined surface 53p2, the movable body 6 can get over the holding part 53p and be inserted into the cavity part 50. It has become.
  • the distance between the pair of flat walls 51s. d1 is slightly larger than the diameter d2 of the moving body 6.
  • the ratio value (d1 / d2) of the distance d1 between the pair of plane walls 51s to the diameter d2 of the moving body 6 is preferably 1.01 to 1.20.
  • this ratio is, for example, 1.01, 1.02, 1.03, 1.04, 1.05, 1.06, 1.07, 1.08, 1.09, 1.10, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, 1.19, 1.20, any of the numerical values illustrated here It may be within a range between the two.
  • the ratio of the diameter d3 of the arc-shaped wall 51c to the diameter d2 of the moving body 6 (d3 / d2) is preferably 1.02 to 1.60.
  • this ratio is, for example, 1.02, 1.04, 1.06, 1.08, 1.10, 1.12, 1.14, 1.16, 1.18, 1.20, 1.22, 1.24, 1.26, 1.28, 1.30, 1.32, 1.34, 1.36, 1.38, 1.40, 1.42, 1.44,. 46, 1.48, 1.50, 1.52, 1.54, 1.56, 1.58, 1.60, even within the range between any two of the numerical values exemplified here Good.
  • the diameter d3 is preferably larger than the distance d1.
  • the movable body 6 can move in the vertical direction (direction perpendicular to the axis) in the cavity 50, and an air flow path is provided in the gap 50g between the arc-shaped wall 51c and the movable body 6. It can be secured.
  • the distance d4 between the flat walls 53s is smaller than the diameter d2 of the moving body 6 as shown in FIG. 29C. It is possible to hold the body 6.
  • a gap 50g is formed between the arc-shaped wall 53c and the moving body 6, and the moving body 6 is held by the holding portion 53p by passing through the gap 50g. Air flow is not blocked.
  • the valve member 4 configured as described above includes the container body 3 by inserting the expanded diameter portion 53 into the intermediate space 21 while the expanded diameter portion 53 expands the outside air introduction hole 15. Can be attached to.
  • the valve member 4 is held by the outer shell 12 in a state where the outer peripheral surface of the shaft portion 51 is in close contact with the edge of the outside air introduction hole 15 when the locking portion 52 is pushed to a position where it comes into contact with the outer surface of the outer shell 12. . Since the outer peripheral surface of the shaft portion 51 is in close contact with the edge of the outside air introduction hole 15, the air in the intermediate space 21 flows out from the gap between the edge of the outside air introduction hole 15 and the cylindrical body 5 when the container body 3 is compressed. To be suppressed.
  • the cylindrical body 5 is attached to the container main body 3 when the outer peripheral surface of the shaft portion 51 is in close contact with the edge of the outside air introduction hole 15, so that the expanded diameter portion 53 is not necessarily essential. Further, since the flat surface 53e is provided at the tip of the cylindrical body 5, even when the tip of the valve member 4 collides with the inner bag 14 when the valve member 4 is pushed into the intermediate space 21, the inner bag 14 It is hard to get hurt. In addition, in this embodiment, since the stopper portion 52s is formed inside the locking portion 52 that is shifted from the shaft portion 51 to the external space S side, the shaft portion 51 is pressed by the edge of the outside air introduction hole 15. However, the stopper portion 52s is not deformed, and it is possible to appropriately block the air flow.
  • the accommodating portion 17 is covered with a shrink film after the valve member 4 is attached.
  • the valve member 4 is mounted in a valve member mounting recess 17 a provided in the housing portion 17 so that the valve member 4 does not interfere with the shrink film.
  • an air flow groove 17b extending from the valve member mounting recess 17a toward the mouth 9 is provided so that the valve member mounting recess 17a is not sealed with the shrink film (see FIG. 21).
  • the valve member 4 of the present embodiment is provided with an annular projecting region 52p projecting from the adjacent region 52a to the external space S side outside the adjacent region 52a of the upper surface 52u of the cylinder 5. Since the shrink film abuts on the projecting region 52p, it is prevented that the movable body 6 and the shrink film come into contact with each other and the movement of the movable body 6 is prevented.
  • the valve member 4 of the present embodiment is perpendicular to the outside air introduction hole 15 at the end portion on the outer space side of the moving body 6 in a state where the moving body 6 is locked to the stopper portion 52s.
  • the height position h1 in the direction (here, the outer surface of the outer shell 12 in a state where the cylindrical body 5 is mounted on the outer shell 12 is used as a reference) is higher than the height position h2 of the adjacent region 52a of the cylindrical body 5. It is high (h1> h2). That is, when the moving body 6 is locked to the stopper portion 52s, a part of the moving body 6 protrudes from the opening 52o.
  • the moving amount of the moving body 6 can be increased, and the valve member can be downsized (thinned).
  • the height position h1 in the direction perpendicular to the outside air introduction hole 15 at the end of the movable body 6 on the outer space side in the state where the movable body 6 is locked to the stopper portion 52s is the height position h3 of the protruding region 52p. It is configured to be lower (h1 ⁇ h3).
  • the moving body 6 preferably has a weight of 0.0250 g or less.
  • This weight is more preferably 0.0150 g or less, and further preferably 0.0100 g or less. This is because in such a case, the moving body 6 is likely to move more quickly.
  • the weight of the moving body 6 is preferably 0.0030 or more. This is because the rigidity of the moving body 6 tends to be insufficient if the moving body 6 is too light.
  • the weight of the moving body 6 is, for example, 0.0030, 0.0040, 0.0050, 0.0060, 0.0070, 0.0080, 0.0090, 0.0100, 0.0110, 0.0120, 0.0130, 0.0140, 0.0150, 0.0200, 0.0250 g, and may be within a range between any two of the numerical values exemplified here.
  • the material of the moving body 6 is not particularly limited, and may be any of resin, metal, and ceramics.
  • the moving body 6 preferably has a diameter of 2.356 mm to 2.406 mm. If the moving body 6 is too small or too large, the moving body 6 may not move smoothly.
  • the diameter of the movable body 6 is specifically, for example, 2.356, specifically, for example, 2.356, 2.360, 2.365, 2.370, 2.375, 2.380, 2.385. 2.390, 2.395, 2.400, 2.405, and 2.406 mm, and may be within a range between any two of the numerical values exemplified here.
  • the cap cover 22 shown in FIG. 21 is opened to expose the pouring member 29, and the container body 3 is tilted so that the pouring spout 29m faces downward, so that the outer shell 12 of the container body 3 is discharged.
  • Compress When the outer shell 12 is compressed in a state where air is in the intermediate space 21, the air in the intermediate space 21 enters the hollow portion 50 from the expanded diameter portion 53 side, and pushes up the moving body 6 as shown in FIG. 30B. To abut against the stopper portion 52s. When the moving body 6 is locked to the stopper portion 52s, the air flow through the cavity 50 is blocked. If the outer shell 12 is further compressed in this state, the pressure in the intermediate space 21 increases, and as a result, the inner bag 14 is compressed.
  • the lid portion 26b When the inner bag 14 is compressed, the internal pressure of the contents in the inner bag 14 rises and presses the lid portion 26b.
  • the hinge portion 26c When the lid portion 26b is pressed, the hinge portion 26c is elastically deformed, so that the lid portion 26b rotates around the hinge portion 26c. As a result, the check valve 26 is opened, and the contents are discharged through the spout 29m.
  • the angle ⁇ between the inner surface 26a2 of the main body portion 26a and the inclined surface 26b1 of the lid portion 26b is 25 degrees or less, the lid portion 26b may be fitted into the through hole 26a1 and the through hole 26a1 may be difficult to open.
  • the angle is 25.1 degrees or more, the through hole 26a1 is smoothly opened.
  • the outer shell 12 When the compressive force applied to the outer shell 12 is released, the outer shell 12 tries to restore its original shape by its own elasticity. As the inside of the intermediate space 21 is decompressed as the outer shell 12 is restored, a force F in the container inner direction is applied to the moving body 6 in the intermediate space 21 as shown in FIG. 30B. As a result, the movable body 6 moves toward the bottom of the cavity 50 and enters the state shown in FIG. 30A, and outside air is introduced into the intermediate space 21 through the gap between the movable body 6 and the wall surface forming the cavity 50. Is done. In the present embodiment, since the gap 50g is formed between the arcuate wall 51c and the arcuate wall 53c that form the moving body 6 and the cavity 50 (see FIG. 29B and FIG. 29C), in particular, After the discharge, the cross-sectional area for sucking outside air increases, and the restoring force of the outer shell 12 is improved.
  • the intermediate space 21 is depressurized before the through-hole 26a1 is completely closed in the check valve 26, the outside air easily flows back into the inner bag 14 by flowing back through the check valve 26.
  • the angle ⁇ is 25.1 degrees or more, the through hole 26a1 is not easily blocked, and thus such a problem is likely to be remarkable.
  • the moving body 6 moves very rapidly as the intermediate space 21 is depressurized, and the outside air is introduced into the intermediate space 21 to cancel the depressurized state of the intermediate space 21. Cheap. For this reason, in this embodiment, inflow of the outside air into the inner bag 14 is suppressed.
  • the moving body 6 is spherical, has a weight of 0.0250 g or less, and has a size of ⁇ 2.356 mm to 2.406 mm, the inflow of outside air into the inner bag 14 is prevented. Particularly effectively suppressed.
  • Example 2 A laminated peeling container 1 was produced under the same conditions as in Example 1 except that the angle ⁇ was set to 24.0 degrees.
  • Example 3 The laminated peeling container 1 was manufactured under the same conditions as in Example 1 except that the diameter d2 was changed to 2.350 mm without changing the material of the moving body 6 in Example 1.
  • Example 4 The laminated peeling container 1 was manufactured under the same conditions as in Example 1 except that the diameter d2 was changed to 2.410 mm without changing the material of the moving body 6 in Example 1.
  • Example 5 The laminated peeling container 1 was manufactured under the same conditions as in Example 1 except that the material was changed to a weight of 0.0542 g without changing the diameter of the moving body 6 of Example 1.
  • Comparative Example 1 In Comparative Example 1, the valve member having the configuration shown in FIG. 31 was inserted into the outside air introduction hole 15, and the outside air introduction hole 15 was opened and closed by moving the valve member relative to the outer shell 12. 1 was produced under the same conditions as in 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

L'invention concerne un récipient dans lequel l'apparition d'une fissuration au niveau d'une extrémité inférieure d'une partie en saillie peut être réduite. La présente invention concerne un récipient comportant : une partie de stockage ; et une partie en saillie. La surface inférieure de la partie de stockage est pourvue d'une section centrale et d'une section périphérique entourant la section centrale. La section centrale est conçue pour former un fond surélevé en étant en retrait par rapport à la section périphérique. La partie en saillie est conçue pour faire saillie vers le bas à partir de la section centrale. La partie en saillie est pourvue, dans une région comprenant un centre longitudinal de son extrémité inférieure, d'une section incurvée qui est incurvée vers le haut.
PCT/JP2019/020295 2018-05-28 2019-05-22 Récipient WO2019230525A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202310384812.XA CN116280581A (zh) 2018-05-28 2019-05-22 容器
CN201980027279.3A CN112041234B (zh) 2018-05-28 2019-05-22 容器

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP2018-101279 2018-05-28
JP2018101279A JP7235947B2 (ja) 2018-05-28 2018-05-28 積層剥離容器
JP2018162824 2018-08-31
JP2018-162824 2018-08-31
JP2018-185623 2018-09-28
JP2018185623A JP7161101B2 (ja) 2018-09-28 2018-09-28 積層剥離容器
JP2019-094070 2019-05-17
JP2019094070A JP7352063B2 (ja) 2018-08-31 2019-05-17 容器

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WO2019230525A1 true WO2019230525A1 (fr) 2019-12-05

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0234228U (fr) * 1988-08-31 1990-03-05
JPH0699965A (ja) * 1992-09-07 1994-04-12 Yoshino Kogyosho Co Ltd 合成樹脂製多層ブロー成形壜体
WO1997045245A1 (fr) * 1996-05-30 1997-12-04 Yoshino Kogyosho Co., Ltd. Conteneur moule par extrudo-gonflage et comportant une partie tambour cylindrique, et moule pour la mise en forme de ce conteneur
WO2015178190A1 (fr) * 2014-05-20 2015-11-26 旭化成パックス株式会社 Soupape d'ouverture et fermeture, bec verseur, et récipient à liquide
WO2017073721A1 (fr) * 2015-10-30 2017-05-04 キョーラク株式会社 Récipient à délamination
JP2017114555A (ja) * 2015-12-25 2017-06-29 株式会社吉野工業所 二重容器
WO2018139355A1 (fr) * 2017-01-26 2018-08-02 キョーラク株式会社 Contenant stratifié séparable

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0234228U (fr) * 1988-08-31 1990-03-05
JPH0699965A (ja) * 1992-09-07 1994-04-12 Yoshino Kogyosho Co Ltd 合成樹脂製多層ブロー成形壜体
WO1997045245A1 (fr) * 1996-05-30 1997-12-04 Yoshino Kogyosho Co., Ltd. Conteneur moule par extrudo-gonflage et comportant une partie tambour cylindrique, et moule pour la mise en forme de ce conteneur
WO2015178190A1 (fr) * 2014-05-20 2015-11-26 旭化成パックス株式会社 Soupape d'ouverture et fermeture, bec verseur, et récipient à liquide
WO2017073721A1 (fr) * 2015-10-30 2017-05-04 キョーラク株式会社 Récipient à délamination
JP2017114555A (ja) * 2015-12-25 2017-06-29 株式会社吉野工業所 二重容器
WO2018139355A1 (fr) * 2017-01-26 2018-08-02 キョーラク株式会社 Contenant stratifié séparable

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